i just installed bullitts on my 91 and i need to do the sn95 brakes up front due to the dust caps. i currently run the mark vii rotors and ranger axles and drums. my question is, can i only use the v6/gt caliper setup or can i go straight to the twin piston 38mm calipers if i leave the rear drums alone for now? will i have to upgrade the mc/ booster/ pv for this? i would like to do the front now if i can and save the mc/booster/pv until i do the rear disc and do that all at once. i have read that the piston volume from the single 66mm caliper from the sn95 v6/gt is actually MORE than the dual piston 38mm of the cobra caliper. any good info would be great i really want to run 13" brakes in the front!